Diagnosis Procedure
1.CHECK CONNECTOR
- Models without automatic drive positioner
- Models with automatic drive positioner
2.CHECK HARNESS FOR OPEN CIRCUIT

3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the ECM. Refer to EC-157, "Diagnosis Procedure".
Main line between A-bag and ABS circuit
ADP branch line circuitProtect your vehicle from corrosion
Wash and wax your vehicle often to keep the
vehicle clean.
Always check for minor damage to the paint
and repair it as soon as possible.
Keep drain holes at the bottom of the doors
open to avoid water accumulation.
Check the underbody for accumulation of
sand, dirt or salt. If prese ...
ECM branch line circuit
Diagnosis Procedure
1.CHECK CONNECTOR
Turn the ignition switch OFF.
Disconnect the battery cable from the negative terminal.
Check the following terminals and connectors for damage, bend and
loose connection (unit side and connector
side).
- Models without automatic drive positione ...
Ground
Ground Distribution
MAIN HARNESS
ENGINE ROOM HARNESS
FRONT END MODULE HARNESS
ENGINE CONTROL HARNESS
BODY HARNESS
BODY NO. 2 HARNESS
...